Skip to content
Open
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
74 changes: 74 additions & 0 deletions docs/content/posts/2026-06-08-release-1.20.5.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,74 @@
---
title: "Apache Flink 1.20.5 Release Announcement"
date: "2026-06-08T00:00:00.000Z"
aliases:
- /news/2026/06/08/release-1.20.5.html
authors:
- yunfengzhou:
name: "Yunfeng Zhou"

---

The Apache Flink Community is pleased to announce the fifth bug fix release of the Flink 1.20 series.

This release includes 3 bug fixes, vulnerability fixes, and minor improvements for Flink 1.20.
Below you will find a list of all bug fixes and improvements (excluding improvements to the build infrastructure and build stability). For a complete list of all changes see:
[JIRA](https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12356854&projectId=12315522).

We highly recommend all users upgrade to Flink 1.20.5 or higher.

# Release Artifacts

## Maven Dependencies

```xml
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-java</artifactId>
<version>1.20.5</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-streaming-java</artifactId>
<version>1.20.5</version>
</dependency>
<dependency>
<groupId>org.apache.flink</groupId>
<artifactId>flink-clients</artifactId>
<version>1.20.5</version>
</dependency>
```

## Binaries

You can find the binaries on the updated [Downloads page]({{< relref "downloads" >}}).

## Docker Images

* [library/flink](https://hub.docker.com/_/flink/tags?page=1&name=1.20.5) (official images)
* [apache/flink](https://hub.docker.com/r/apache/flink/tags?page=1&name=1.20.5) (ASF repository)

## PyPi

* [apache-flink==1.20.5](https://pypi.org/project/apache-flink/1.20.5/)

# Release Notes


Release Notes - Flink - Version 1.20.5

<h2> Bug
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-39534'>FLINK-39534</a>] - Upgrade pemja to 0.5.7
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-39753'>FLINK-39753</a>] - RocksDB ColumnFamilyOptions and LRUCache leak in Compactor
</li>
</ul>

<h2> Improvement
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-39672'>FLINK-39672</a>] - Update doc about Java Records
</li>
</ul>
14 changes: 7 additions & 7 deletions docs/data/flink.yml
Original file line number Diff line number Diff line change
Expand Up @@ -43,13 +43,13 @@
source_release_sha512_url: "https://downloads.apache.org/flink/flink-2.0.2/flink-2.0.2-src.tgz.sha512"

1.20:
name: "Apache Flink 1.20.4"
binary_release_url: "https://www.apache.org/dyn/closer.lua/flink/flink-1.20.4/flink-1.20.4-bin-scala_2.12.tgz"
binary_release_asc_url: "https://downloads.apache.org/flink/flink-1.20.4/flink-1.20.4-bin-scala_2.12.tgz.asc"
binary_release_sha512_url: "https://downloads.apache.org/flink/flink-1.20.4/flink-1.20.4-bin-scala_2.12.tgz.sha512"
source_release_url: "https://www.apache.org/dyn/closer.lua/flink/flink-1.20.4/flink-1.20.4-src.tgz"
source_release_asc_url: "https://downloads.apache.org/flink/flink-1.20.4/flink-1.20.4-src.tgz.asc"
source_release_sha512_url: "https://downloads.apache.org/flink/flink-1.20.4/flink-1.20.4-src.tgz.sha512"
name: "Apache Flink 1.20.5"
binary_release_url: "https://www.apache.org/dyn/closer.lua/flink/flink-1.20.5/flink-1.20.5-bin-scala_2.12.tgz"
binary_release_asc_url: "https://downloads.apache.org/flink/flink-1.20.5/flink-1.20.5-bin-scala_2.12.tgz.asc"
binary_release_sha512_url: "https://downloads.apache.org/flink/flink-1.20.5/flink-1.20.5-bin-scala_2.12.tgz.sha512"
source_release_url: "https://www.apache.org/dyn/closer.lua/flink/flink-1.20.5/flink-1.20.5-src.tgz"
source_release_asc_url: "https://downloads.apache.org/flink/flink-1.20.5/flink-1.20.5-src.tgz.asc"
source_release_sha512_url: "https://downloads.apache.org/flink/flink-1.20.5/flink-1.20.5-src.tgz.sha512"
release_notes_url: "https://nightlies.apache.org/flink/flink-docs-release-1.20/release-notes/flink-1.20"

1.19:
Expand Down
4 changes: 4 additions & 0 deletions docs/data/release_archive.yml
Original file line number Diff line number Diff line change
@@ -1,5 +1,9 @@
release_archive:
flink:
-
version_short: "1.20"
version_long: 1.20.5
release_date: 2026-06-03
-
version_short: "2.2"
version_long: 2.2.1
Expand Down